Preview in text SOP for multibyte characters is grayed out

Hello.

I entered “alphabet”, “numbers”, and “multibyte characters such as Japanese” into Text SOP.

In the 3D preview, only the multibyte characters are displayed in dark gray.

This happens in the operator preview and in the geometry viewer.

This phenomenon occurs on macOS.
It does not seem to occur in indows.

Thanks.

Build : 2021.12380
OS : macOS Catalina 10.15.7
Graphics : Radeon Pro Vega 20 4 GB (Intel UHD Graphics 630 1536 MB)